1 | #include "ReplacePseudoFunc.hpp" |
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2 | |
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3 | #include <set> |
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4 | |
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5 | #include "AST/Decl.hpp" |
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6 | #include "AST/Inspect.hpp" |
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7 | #include "AST/Pass.hpp" |
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8 | #include "AST/Stmt.hpp" |
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9 | #include "Common/utility.h" |
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10 | #include "ResolvExpr/Resolver.h" |
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11 | #include "SymTab/Mangler.h" // for Mangler |
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12 | namespace Validate { |
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13 | |
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14 | namespace { |
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15 | |
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16 | std::set<std::string> queryLabels; |
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17 | std::set<std::string> queryValues; |
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18 | |
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19 | struct FindGenEnumArray final : public ast::WithShortCircuiting { |
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20 | void previsit(const ast::ApplicationExpr* enumDecl); |
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21 | }; |
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22 | |
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23 | void FindGenEnumArray::previsit(const ast::ApplicationExpr* expr) { |
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24 | auto fname = ast::getFunctionName(expr); |
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25 | if (fname == "labelE" || fname == "valueE") { |
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26 | if (expr->args.size() != 1) { |
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27 | SemanticError(expr, "Position Expression only take one parameter"); |
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28 | } |
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29 | const ast::VariableExpr* arg = |
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30 | expr->args.front().as<const ast::VariableExpr>(); |
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31 | if (!arg) { |
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32 | SemanticError(expr, "Unimplement Pseudo Function Cases"); |
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33 | } |
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34 | const ast::ObjectDecl* argAsVar = arg->var.as<const ast::ObjectDecl>(); |
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35 | const std::string referredName = argAsVar->name; |
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36 | const ast::EnumInstType* argType = |
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37 | argAsVar->type.as<const ast::EnumInstType>(); |
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38 | if (!argType) { |
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39 | SemanticError( |
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40 | argAsVar, |
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41 | "Position can only be used on an enumeration instance"); |
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42 | } |
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43 | ast::ptr<ast::EnumDecl> base = argType->base; |
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44 | assert(base); |
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45 | if (fname == "labelE") queryLabels.insert(base->name); |
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46 | if (fname == "valueE") queryValues.insert(base->name); |
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47 | } |
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48 | } |
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49 | |
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50 | struct PseudoFuncGenerateRoutine final : public ast::WithDeclsToAdd<>, |
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51 | public ast::WithSymbolTable, |
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52 | public ast::WithShortCircuiting { |
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53 | void previsit(const ast::EnumDecl* enumDecl); |
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54 | }; |
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55 | |
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56 | void PseudoFuncGenerateRoutine::previsit(const ast::EnumDecl* enumDecl) { |
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57 | visit_children = false; |
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58 | const CodeLocation& location = enumDecl->location; |
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59 | if (enumDecl->members.size() == 0 || !enumDecl->base) return; |
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60 | |
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61 | std::vector<ast::ptr<ast::Init>> inits; |
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62 | std::vector<ast::ptr<ast::Init>> labels; |
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63 | for (const ast::Decl* mem : enumDecl->members) { |
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64 | auto memAsObjectDecl = dynamic_cast<const ast::ObjectDecl*>(mem); |
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65 | inits.emplace_back(memAsObjectDecl->init); |
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66 | labels.emplace_back(new ast::SingleInit( |
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67 | location, ast::ConstantExpr::from_string(location, mem->name))); |
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68 | } |
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69 | if (queryValues.count(enumDecl->name)) { |
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70 | auto init = new ast::ListInit(location, std::move(inits)); |
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71 | auto values = new ast::ObjectDecl( |
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72 | location, "values_" + enumDecl->name, |
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73 | new ast::ArrayType( |
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74 | enumDecl->base, |
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75 | ast::ConstantExpr::from_int(location, enumDecl->members.size()), |
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76 | ast::LengthFlag::FixedLen, ast::DimensionFlag::DynamicDim), |
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77 | init, ast::Storage::Static, ast::Linkage::AutoGen); |
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78 | symtab.addId(values); |
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79 | values->mangleName = Mangle::mangle(values); |
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80 | declsToAddAfter.push_back(values); |
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81 | } |
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82 | if (queryLabels.count(enumDecl->name)) { |
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83 | auto label_strings = new ast::ListInit(location, std::move(labels)); |
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84 | auto label_arr = new ast::ObjectDecl( |
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85 | location, "labels_" + enumDecl->name, |
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86 | new ast::ArrayType( |
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87 | new ast::PointerType(new ast::BasicType{ast::BasicType::Char}), |
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88 | ast::ConstantExpr::from_int(location, enumDecl->members.size()), |
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89 | ast::LengthFlag::FixedLen, ast::DimensionFlag::DynamicDim), |
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90 | label_strings, ast::Storage::Static, ast::Linkage::AutoGen); |
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91 | symtab.addId(label_arr); |
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92 | label_arr->mangleName = Mangle::mangle(label_arr); |
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93 | declsToAddAfter.push_back(label_arr); |
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94 | } |
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95 | } |
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96 | |
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97 | struct ReplacePseudoFuncCore : public ast::WithShortCircuiting, |
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98 | public ast::WithSymbolTable, |
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99 | public ast::WithConstTranslationUnit { |
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100 | ast::Expr const* postvisit(ast::ApplicationExpr const* decl); |
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101 | }; |
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102 | |
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103 | ast::Expr const* ReplacePseudoFuncCore::postvisit( |
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104 | ast::ApplicationExpr const* expr) { |
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105 | auto fname = ast::getFunctionName(expr); |
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106 | auto location = expr->location; |
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107 | if (fname == "posE" || fname == "valueE" || fname == "labelE") { |
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108 | if (expr->args.size() != 1) { |
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109 | SemanticError(expr, |
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110 | "Pseudo Enum Expression only take one parameter"); |
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111 | } |
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112 | ast::ptr<ast::VariableExpr> arg = |
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113 | expr->args.front().as<const ast::VariableExpr>(); |
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114 | if (!arg) { |
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115 | SemanticError(expr, "Unimplement Pseudo Function Cases"); |
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116 | } |
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117 | const ast::ObjectDecl* argAsVar = arg->var.as<const ast::ObjectDecl>(); |
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118 | const std::string referredName = argAsVar->name; |
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119 | const ast::EnumInstType* argType = |
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120 | argAsVar->type.as<const ast::EnumInstType>(); |
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121 | if (!argType) { |
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122 | SemanticError(argAsVar, |
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123 | "Pseudo Enum Expression can only be used on an " |
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124 | "enumeration instance"); |
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125 | } |
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126 | const ast::EnumDecl* base = argType->base; |
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127 | for (size_t i = 0; i < base->members.size(); i++) { |
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128 | if (base->members[i]->name == referredName) { |
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129 | if (fname == "posE") |
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130 | return ast::ConstantExpr::from_int(expr->location, i); |
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131 | else if (fname == "labelE") |
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132 | return ast::ConstantExpr::from_string(expr->location, |
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133 | referredName); |
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134 | else |
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135 | return new ast::TypeExpr(expr->location, argType); |
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136 | } |
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137 | } |
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138 | |
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139 | ResolvExpr::ResolveContext context{symtab, transUnit().global}; |
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140 | |
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141 | if (fname == "labelE") { |
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142 | ast::Expr* toResolve = |
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143 | new ast::NameExpr(expr->location, "labels_" + base->name); |
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144 | auto result = ResolvExpr::findVoidExpression(toResolve, context); |
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145 | if (result.get()) { |
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146 | auto arrAsVar = result.strict_as<ast::VariableExpr>(); |
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147 | auto untyped = new ast::UntypedExpr( |
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148 | location, new ast::NameExpr(location, "?[?]"), |
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149 | {new ast::VariableExpr(*arrAsVar), |
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150 | ast::ConstantExpr::from_int( |
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151 | location, |
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152 | 0)}); /// TODO: dummy value. |
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153 | /// To make it works need to change the unifier |
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154 | |
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155 | auto typedResult = |
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156 | ResolvExpr::findVoidExpression(untyped, context); |
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157 | if (result.get()) { |
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158 | ast::ptr<ast::ApplicationExpr> ret = |
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159 | typedResult.strict_as<ast::ApplicationExpr>(); |
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160 | return new ast::ApplicationExpr(*ret); |
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161 | } |
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162 | } |
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163 | } |
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164 | |
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165 | if (fname == "valueE") { |
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166 | ast::Expr* toResolve = |
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167 | new ast::NameExpr(expr->location, "values_" + base->name); |
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168 | auto result = ResolvExpr::findVoidExpression(toResolve, context); |
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169 | if (result.get()) { |
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170 | auto arrAsVar = result.strict_as<ast::VariableExpr>(); |
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171 | auto untyped = new ast::UntypedExpr( |
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172 | location, new ast::NameExpr(location, "?[?]"), |
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173 | {new ast::VariableExpr(*arrAsVar), |
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174 | ast::ConstantExpr::from_int( |
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175 | location, |
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176 | 0)}); /// TODO: dummy value. |
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177 | /// To make it works need to change the unifier |
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178 | |
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179 | auto typedResult = |
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180 | ResolvExpr::findVoidExpression(untyped, context); |
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181 | if (result.get()) { |
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182 | ast::ptr<ast::ApplicationExpr> ret = |
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183 | typedResult.strict_as<ast::ApplicationExpr>(); |
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184 | return new ast::ApplicationExpr(*ret); |
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185 | } |
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186 | } |
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187 | } |
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188 | } |
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189 | return expr; |
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190 | } |
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191 | |
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192 | } // namespace |
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193 | |
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194 | void replacePseudoFunc(ast::TranslationUnit& translationUnit) { |
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195 | ast::Pass<FindGenEnumArray>::run(translationUnit); |
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196 | ast::Pass<PseudoFuncGenerateRoutine>::run(translationUnit); |
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197 | ast::Pass<ReplacePseudoFuncCore>::run(translationUnit); |
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198 | } |
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199 | } // namespace Validate |
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